Opponents of a cable car development proposed for Hobart's Mount Wellington have accused the company behind it of trying to hide information from the public.

Anti-cable-car group Respect The Mountain claims leaked documents show that support towers for the car would be up to 75 metres tall.

Hobart's tallest building, the Wrest Point Tower, is 73 metres tall.

The group says the smallest of the three towers proposed by the Mount Wellington Cableway Company (MWCC) for its cable car project is 36 metres tall.

...it seems odd that they would leave off information about the heights of the towers.

Jason Turvey, Respect the Mountain

"[The developers] were more than happy to disclose technical data such as cabin capacity figures, rope diameters, travel times and speeds... so it seems odd that they would leave off information about the heights of the towers," said Jason Turvey from Respect the Mountain.

Mr Turvey said many people in the community were apathetic about the proposal and he hoped that releasing the leaked figures would jolt them into action.

"There is a real danger that a lot of people are putting this to the side and saying 'well, it will never happen'... and really start to look into it more seriously to better educate themselves," he said.

Final tower heights 'not yet confirmed'

The company said the height of the towers would not be known until Hobart City Council allowed testing to take place on the land.

Adrian Bold from MWCC said any information released now was hypothetical.

"That permission is what we need to go onto that land and bring the team out from Austria, and bring the team out from Switzerland and do the analysis," he said.

"We can understand the canopy heights, we can understand the rock stability, we can understand the soil tests; we need to do those tests before we can confirm any heights or locations."

Mr Bold said the figures the group is quoting were from confidential documents provided to the council, and their leaking raised serious questions about the council's integrity.

You have no doubt been hearing a lot about the Paris Agreement and know that it pertains to climate change, but are too embarrassed at this stage to ask for an overall explanation of what it's all about.